I only recently installed avast and hadn't even realized that it updated because it does this automatically. I just checked my privacy settings and they were changed, and I know for a fact that they were disabled when I installed Avast. It's annoying and a little disappointing, but whatever. Just wanted to post here to state that this isn't an isolated incident. Avast does apparently change Privacy settings, and it has happened with the most recent update regardless of what that changelog claims.